diff --git a/browser/styles/main/ArticleDetail.styl b/browser/styles/main/ArticleDetail.styl
index 1fcfcc57..53180659 100644
--- a/browser/styles/main/ArticleDetail.styl
+++ b/browser/styles/main/ArticleDetail.styl
@@ -257,9 +257,10 @@ infoButton()
           width 150px
           max-height 150px
           background-color white
-          z-index 5
+          z-index 50
           border 1px solid borderColor
           border-radius 5px
+          overflow-y auto
           &>button
             width 100%
             display block